<!DOCTYPE HTML>
<html lang="en-US">
<head>
	<meta charset="UTF-8">
	<title></title>
</head>
<body>
	
</body>
</html>
<script type="text/javascript">
var a = [];
var l = a.push(1,2,3);
alert(a);
alert(l);
l = a.pop();
alert(a);
alert(l);
</script>